NEW ASPECTS ON THE C-12+C-12 SYSTEM

Two new aspects are reported: (a) Resonances in the scattering of C-12 on C-12 are interpreted as arising from an equator-equator orientatio n of the oblately deformed C-12 nuclei. In these states the nuclei rot ate around the internuclear axis and carry out butterfly and radial os cillations. (b) The states of Mg-24 up to the molecular resonance regi on are consistently studied by a semimicroscopic algebraic method with two C-12 clusters. This approach applies the U(4) vibron model for th e relative motion of the C-12 clusters and the SU(3) shell model for t heir internal structure and reproduces the spectrum and electromagneti c probabilities of Mg-24.